23 lines
328 B
CoffeeScript
23 lines
328 B
CoffeeScript
happy = (n) ->
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seen = {}
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while true
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n = sum_digit_squares(n)
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return true if n == 1
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return false if seen[n]
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seen[n] = true
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sum_digit_squares = (n) ->
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sum = 0
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for c in n.toString()
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d = parseInt(c)
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sum += d*d
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sum
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i = 1
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cnt = 0
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while cnt < 8
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if happy(i)
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console.log i
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cnt += 1
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i += 1
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